How does engine horsepower / sprocket size relationship factor in?
One of the best ways to understand is to get on a 10 speed bike and try taking off on each gear.
I know in the rc world small driving large seems to be less stressful on electric motors.
Applies to all motors, even human ones.
I have bolted a flat piece of steel to a sprocket, that I needed a larger center hole in, then found center. I used a hole saw to drill the sprocket. You may need to replace the center drill bit with a smooth 1/4" shaft to keep the holesaw from walking and reach deep enough. Use plenty of oil or...
Have not had a clutch lever for over 20 years and it pulls smooth, even with the sidecar, in high range with no problems. It is a little quicker in low.
The Calli with the 1100 engine and only 70,000 miles is faster. Fifth is only good above 80 but fourth will pull to 100mph.
The Vert with that heavy aluminum body sidecar will still surprise some 1200 BMW GSA riders. I've been known to show up right on their back tire at 75mph on gravel.